Heel holder for shoe-nailing machines



Aug. 10,1926. n 1,595,916

' L. ZETlNA Y OSORIO l HEEL HOLDER FOR SHOE NAILING MACHINES Filed July a, 1925 20 lil- 2- I Q 2li a4 Patented Aug. l0, 1926.

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LORENZO ZETINA Y OSORIO, OF MEXICO CITY, TvEXICO.

Application filed July 8, 1925, Serial No. 42,321, and

The present invention has reference generally to improvements in shoe manufacturing machines and more particularly relates to a heel holder for use in connection therewith.

The invention as its primary aim and object contemplates the provision of a holder adapted to be mounted on a shoe manufacturing machine and is provided with adjustable clamping means whereby heels of various sizes may be readily held therein so that rubber heels may be effectively connected to the heel of the slice which is being held.

More particularly the invention embraces the provision of a Aholder embodying a substantially U-shaped frame the middle and side portions of which are recessed to slidably receive the heel engaging clamps, improved means being also provided for regulating the adjustment of the clamps.

Among the other aims and objects of the invention may be recited the provision of a device of the above character constructed with a view to compactness wherein the number of parts are few, the construction simple, the cost of production low and the efficiency high.

Further objects as well as the nature, characteristic features and scope of the invention will be more readily apparent from the following' description taken in connection with the drawings and pointed out in the description forming a part of the invention.

The invention is clearly illustrated in the drawings, in which Fig. 1 is a perspective view of the improved holder for heels,

Fig. 2 is a longitudinal sectional view taken on the line 2-2 of Fig. 1, and

Fig. 3 is an elevational detail of a form of key used for adjusting the clamping elements.

Similar characters of reference are employed in all of the above described views to indicate corresponding parts.

Referring now, more particularly, to the accompanying drawings there is provided a holder embodying a frame preferably though not necessarily of a substantially U-shaped configuration and is constructed of superposed plates 11 and 12 of U-sliaped configuration secured to each other by HEEL HOLDER FOR SHOE-NAILING .MACHINES in Mexico August 7, 1924i.

suitable fastening means 12. The sides of the lower plate 12 are provided with recesses 13 at opposite points for respectively accommodating the opposed clamping elements 14, 15, 16 and 16. The medial por.- tion of the lower plate 12 is similarly recessed for slidably accommodating the clamping element 17. In this connection it is to be noticed that the recesses and clamping elements are mounted by a dove-tail connection so that they are supported from the lower surface of the plates.

The outer edges of the clamping elements are curved so as to readily conforn'i to the shape of the heel when adjusted. 1n addition the upper surfaces are provided with racks 17 for a purpose that will presently appear.

in order to operate the clamping elements 16 and 16 simultaneously with each other and the elements 14 and 15 simultaneously with each other and to also provide means for operating the element 17 the upper plate 11 has journalled therein shaft sections 217 23 and 26 respectively in one side portion, the intermediate portion and in the other side portion and these shaft sections are arranged in engagement with each other through the instrumentality of intermeshing gears 2d. and 25 and 27' and 28 which are positioned in apertures 24 at the juncture of the side portions with the intermediate portions. 1n addition the shaft sections 21 and 2G are fitted with cog wheels 22 and 29 respectively which are accommodated in suitable recesses and have their teeth engaged with the raclr 17 on the upper surface of the elements 1G and 1G respectively. Other shaft sections 32, 341; and 33 are similarly mounted and engaged with each other in the upper plate 11 and are arranged parallel respectively to the shaft sections 21, 23 and 26. In addition the shaft sections 32 and 33 are fitted with cog wheels 30 and 31 respectively situated in suitable openings to permit the teeth of the wheels to mesh with the rack 17 on the upper surface of the elements 14C and 15. Other shaft sections 35 and 36 are j ournalled in the upper plate and are respectively arranged parallel in sections 32 and 34 while the shaft section 36 carries a cog wheel positioned in a suitable opening in the inter* mediate portion so that the teeth of the wheel mesh with the rack bar on the element 17. The ends or the shaft sections 31, 33, 35, 32 and 2l project upwardly on one side of the trame and are respectively fitted with caps 1S, 19 andQO. These caps are provided with central apertures and transverse grooves for accommodating the shank 3S and cross-pin 39 respectively oi an adjusting key. lt is readily apparent that when the key is readily engaged with either ot the caps and rotated by reason of the connection between the shaft that rotary movement is imparted simultaneously to either of the cog wheels 22 and 29 or 30 and 31 to simultaneously adjust the corresponding clamping element toward or from each other depending on the size ot' the heels to be clamped therein. Likewise by adjusting the cap 18 the clamping clement 17 will be slid in the holder.

It is believed in view of the Yioregoing that a further detailed description of the operation o1E the invention is entirely unnecessary. It is likewise believed that the advantages of the invention will be readily apparent.

Having thus fully described the invention what is claimed as new and desired to be secured by Letters Patent is:

l. A holder of the character described, including a substantially U-shaped frame provided in the opposite side portions and in the medial portion with dove-tailed recesses, clamping elements of dove-tailed shape in cross section slidably mounted in the recesses and provided with curved outer edges, and means mounted on the 'trame for adjusting the opposed clamping elements simultaneously and for also adjusting the clamping element in the medial portion of the frame.

2. A holder as claimed in claim l, wherein each oi the elements is provided on the upper surface with rack teeth and wherein the means for adjustingthe elements include interconnected shaft sections journalled 'in the sides of the intermediate portions of the frame, cog wheels on the shaft sections meshing with the rack teeth on the clamping elements, and key engageable caps mounted on the ends of certain of the shaft sections.

ln testimony whereof I aliix my signature.

LORENZO ZETINA Y OSORIO. 

